Rivet-making machine.



No. 694.596. Patented-Mar. 4, I902.

' F. W. WOOD.

BIVET MAKING MACHINE. (Application filed A 'r. a, 1901.)

(No Model.)

UNITED STATES PATENT Fries.

RIVET-MAKING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 694,596, dated March 4,1902.

Application filed April 6 1901.

To all whom it may concern:

Be itknown that I, FRANKW. WOOD, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Rivet-MakingMachines, of which the following is a specification.

My said invention consists in animproved machine for the manufacture ofthe rivets for sprocket or bicycle chains whereby such rivets may beturned out very rapidly, economically, and a more perfect rivet resultthan by the usual mechanism and method.

Referring to the accompanying drawings, which are made a part hereof,and. on which similar reference characters indicate similar parts,Figure 1 is an elevation of a press such as may be used in the practiceof my invention. Fig. 2 is a top or plan view of the bed of said press,showing the dies mounted in position thereon; Fig. 3, a central verticalsection through the same on the dotted line 3 3 in Fig. 2; Fig. 4, atransverse section on the dotted line 4 4; in Fig. 2, and Fig; 5 adetail perspective view of one of the finished rivets.

In said drawings the portions marked A represent the bed of the press,13 the reciprocating head carrying the punches, and O C dieplates onsaid bed. The press, including the bed A, head 13, and all its operatingmechanism, may be of any appropriate construe tion and design,preferably with a suitable automatic feeding device (not shown) to feedalong the rod R, from which the rivets r are made, and needs no specialdescription, being illustrated for the purpose of making anunderstanding of the invention more clear only. The die-plate O ismounted in fixed position on the bed A and is formed with a longitudinalperforation of the size of the rod from which the rivets are to be made,through which said rod is fed by any appropriate feeding mechanism. Itis also provided with two vertical perforations c, which intersect saidlongitudinal'perforation on opposite sides, their adjacent faces beingflat or formed to suit the desired shape of the rivet and the outsideportions oval or any suitable shape in cross-section. The die-plate C isSerial No. 54,673. (No model.)

mounted to be adjusted on the bed A by means of slots .9 and set-screws0', which pass therethrough into suitable perforations in said bed. Ithas a longitudinal perforation directly in line with the longitudinalperforation in plate 0 and of exactly the size desired for the finishedrivet, being formed of chilled steel and with sharp cutting edges, sothat after the operation in plate 0 as the rod is forced through plate 0all burs and irregularities on the surface will be removed and the bodyof the rivets thus made uniform in size and of perfect shape as mostdesired for the purpose of a journal for the link center mounted thereonwhen in use. It is removably mounted to allow for grinding bothoutting-faces c and 0 A stop 0 is movably mounted at an appropriatepoint to limit the movement of the rod as it is fed forward to securethe desired length of rivet and insure that all the rivets shall be ofuniform length.

Mounted on the reciprocating head B are a pair of die-punches 19,corresponding in crosssectional form to the die-apertures cin plate 0and adapted to pass therethrough as said head B reciprocates. A cuttingdie or punch Z). is also carried on said head and is positioned tocooperate with the edge 0 of plate 0 to cut off the rivets in the centerof the portion out out of the sides of the rod by the dies 17.

The operation is: The rod being fed through plate 0, the dies 1) comedown through the die-apertures c and cut out short portions fromopposite sides of the rod. The rod is then fed forward step by stepuntil its end strikes stop 0 when the die 12 comes down and cuts off therivet r of perfect finished form, having the flattened ends adapted toenter appropriate apertures in the side links and the center portionadapted to form a journal for the center link of the chain. Thecutter-die b is formed with a concaved edge to fit the convex surface ofthe rod, as shown at the left of Fig. 3, so that the operation ofcutting will not flatten said rod or rivet. The operation continuesuntil the rod is entirely made up into rivets, and one rod can be fedafter another, so that the manufacture of the rivets is very rapid atcomparatively small cost, while a very superior article is the result.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a rivet-making machine, the combination, of the die-plate havingan aperture through which the wire is fed, and intersecting aperturesthrough which the slabbingdies operate, a die having an aperturesurrounded by a cutting corner or edge through Which'the rivets areforced to trim or form them, a reciprocating die-head carrying theslabbing-dies and also a severing-die arranged to cooperate with theopposite end of the trimming-die to cut the rivets at the proper points,substantially as set forth.

2. In a rivet-making machine, the combination, of the die-p1ate 0 havinga longitudinal perforation to hold the rod or wire to be operated uponand intersecting transverse perforations on each side thereof, thesecond die-plate 0 having a perforation of the size and form desired forthe finished rivet, and formed with hardened cutting edges to remove anyirregularities therefrom as it is forced therethrough, and the die-blockB carrying the pair of dies 1) Z) for slabbing the rivet, and thecutting-die Z) forcutting it off at the proper point as it projects fromthe die-plate C, substantially as set forth.

3. In a machine for making rivets, the combination of the die-platehaving longitudinal and transverse intersecting perforations, a seconddie-plate having a longitudinal perforation with cutting edge, in linewith the longitudinal perforation in said first-named plate, and acutting-die adapted to out 01f the rivets at the outer edge of saidsecond plate, substantially as set forth.

4. In a machine for making bicycle-chains, rivet-forming dies,comprising a plate with a longitudinal perforation through which the rodis to be fed and transverse intersecting perforations, a second platewith a longitudinal perforation for removing surface irregularities, astop, and a reciprocating die-head carrying dies to slab the rod, andcut off the rivets simultaneously, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, atIndianapolis, Indiana, this 30th day of March, A. D. 1901.

FRANK IV. IVOO D.

